The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
May. 09, 2017
Filed:
Mar. 27, 2015
Mathread Inc., Wixom, MI (US);
Michael Garver, Brighton, MI (US);
MATHREAD INC., Wixom, MI (US);
Abstract
A method for correcting translational misalignment between male and female fastener members to prevent false threading, the method comprising: inserting a lead end of a male fastener member into a female fastener member, wherein the female fastener member comprises: at least one female fastening thread formed in an interior of the female fastener member, at least one female lead thread formed in the interior of the female fastener member, the at least one female lead thread having a groove in the crest, and wherein the male fastener member comprises: a shank that has a lead end for insertion into the interior of the female fastener member; at least one male fastening thread formed on the exterior of the shank as a plurality of thread windings adapted to mate with the at least one female fastening thread; at least one male lead thread formed on the exterior of the shank at the lead end that is at least a half winding around the shank and comprises a curved profile defined by an arc having a radius approximately equal to a radius of an arc that is tangent to both flanks of a thread profile of the at least one male fastening thread and below the pitch line of the at least one male fastening thread; and rotating the fastener members relative to each other while the at least one male lead thread of the male fastener member passes over and does not thread into the groove in the crest of the at least one female lead thread of the female fastener member.